[amsat-bb] Re: ISS HamTV Frequencies
Rogerkola at aol.com
Sun May 12 14:34:28 PDT 2013
Anybody off the top of their heads know how many degrees a second swing
are (is?) required for direct aim at the ISS? I know there are beam
width tolerances, altitude variations and degree above horizon
variations but I'm looking at Bob B's fixed antenna aiming of 15-20
degrees above horizon to evaluate swinging a dish without torque eating
up the drive train...
On 5/12/2013 5:01 PM, M5AKA wrote:
> The AMSAT-UK page at http://amsat-uk.org/2013/05/12/hamtv-from-the-iss/ provides the links, they are:
> Facebook https://www.facebook.com/Hamtvproject
> More information at http://www.amsat.it/Amsat-Italia_HamTV_brochure.pdf
> and http://www.amsat.it/Amsat-Italia_HamTV.pdf
> The HamTV.pdf gives the link budget, looks like there's 7dB of coax/connector losses to overcome between the ISS transmitter and the antenna. That document indicates a 90cm dish should be sufficient.
> I believe that it's going up on ATV 4 which is currently slated for June 5.
> 73 Trevor M5AKA
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